Loom.



No. 680,743. Patented Mg. 20, MN. IE. 8. STIMIPSUN.

(Appliation filed m 2, 1901.) (No Model.)

ifiuiimmAud I mni'l lfllllllllllllllll lilrvrrnn ares ATENT rrrcnt EDXVARD S. STIMPSON, OF HOPEDALE, MASSACHUSETTS, ASSIGNOR TO DRAPER COMPANY, OF SAME PLACE.

LOOM.

SPECIFICATION forming part of Letters Patent No. 680,748, dated August 20, 1901. Application filed May 2,1901- Serial No. 58,480- No model.)

To aZZ whom it may concern:

Be it known that I, EDWARD S. STIMPSON, a citizen of the United States, and a resident of Hopedale, county of WVorcester, State of Massachusetts, have invented an Improvement in Looms, of which the following description, in connection with the accompanying drawings, is a specification, like charac ters on the drawings representing like parts.

My present invention relates more particularly to means for preventing rebound of the shuttle after it enters the shuttle-box of a loom; and it has for its object the production of means for accelerating the return of the binder to engage the shuttle after the impact of the latter as it enters the shuttle-box has thrown the binder outward.

The novel features of my invention will be hereinafter fully described, and particularly pointed out in the following claims.

Figure 1 is a front elevation of one end of the lay of a loom with a shuttle-box thereon, one embodiment of my invention being shown in connection therewith. Fig. 2 is a top or plan View of the parts shown in Fig. l; and Fig. 3 is a transverse sectional view on the line a: 00, Fig. 2, looking toward the right.

The lay A longitudinally slotted at 10, Fig. 2, for the shaft of the picker P, the shuttle-box mounted on the lay and compris ing the front wall B, back wall 13, and overhanging guard B the binder B pivotally mounted at its outer end on a stud b and a portion of the protector mechanism, consisting of the rock-shaft m, mounted in bearings m beneath the lay, the dagger m rockerarm 972 having thereon the upturned finger m bearing against the back of the binder, and the controlling-spring S to maintain the parts in the position shown when the shuttie is not in the box, may be and are all of well-known construction and operate in the usual manner.

When the shuttle enters the shuttle-box, it is moving with great velocity, and upon impact with the swell'of the binder the latter is instantly thrown out or away from the shuttle with violence and very rapidly and against the stress of the spring S, and its momentum actually causes it to lose contact with the shuttle. Manifestly the spring will return the binder to engage the side of the shuttle, but not always quickly enough to prevent the shuttle striking the picker with such force as to rebound and be improperly positioned in the shuttle-box. To increase the strength of the spring does not remedy the evil, as the blow of the shuttle on the binder will meet with too much resistance.

l have provided means to overcome the objections before stated by exerting upon the binder a cumulative force to retract or return it toward the shuttle, so that the shuttle will be engaged in time to soften the blow on the picker, and thereby obviate rebound of the shuttle.

In the practical embodiment of my invention herein shown I have mounted a stand at on the lay by means of a bolt d passed through an upright slot at, the stand having a socket d therein, Fig. 8, in which is mounted a plunger (Z its shank (Z extending up loosely through the bottom of the socket and provided with a retaining-pin 5. An auxiliary spring s is coiled about the shank between the plunger and the bottom of the socket, the stand d being shown as so located that the plunger will be above and in the path of the dagger m. Now when the binder is thrown out, as described, the dagger will be lifted and brought into engagement with the plunger (Z and the spring 3 will be compressed to add its force to that of the spring S in returning the binder to contact with the shuttle. Thus the resistance to the impact of the shuttle will not be increased; but as the binder is about reaching the outward limit of its throw the force of the spring 3 comes into play, accelerating the stopping and turning of the binder and acting with the spring S in giving a strong, quick, and maximum impulse to the binder as it is swung in against the shuttle. Consequently the latter is sooner subjected to the retarding action of the binder, and when theshuttle hits 5 the picker the blow will not be hard enough to cause rebound. By moving the stand (1 up or down the plunger will be brought into engagement with the dagger at a later or earlier instant in the outward throw of the binder to thereby adjust the time at which the eumulative action of the springs shall take place.

My invention is not restricted to the single practical embodiment herein shown and described, as various changes and modifications may be made by those skilled in the art with out departing from the spirit and scope of my invention.

Having fully described my invention, what I claim, and desire to secure by Letters Patent, is

1. In a loom, the lay, a shuttle-box thereon, a binder, and means, including a plurality of successively-acting springs, to exert a cumulative force upon the binder when thrown independent and successively-acting springs, to exert a cumulative force upon the binder when thrown out by the entering shuttle, to accelerate the return of the binder, and a device to regulate the time of operation of one of the springs.

3. In a loom, the lay, a shuttle-box thereon having a binder, a spring-controlled rockshaft mounted on the lay and having a finger in engagement with the binder, to resist 011tward movement of the binder, and an auxiliary spring to act upon the binder and accelerate its return when thrown out by impact of the entering shuttle.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

EDWARD S. STIMPSON.

\Vitn esses:

GEORGE OTIS DRAPER, ERNEST W. W001). 

